NDLI: Experimental evidence in support of joule heating associated with geomagnetic activity

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Experimental evidence in support of joule heating associated with geomagnetic activity

Content Provider	NASA Technical Reports Server (NTRS)
Author	Devries, L. L.
Copyright Year	1971
Description	High resolution accelerometer measurements in the altitude region 140 to 300 km from a satellite in a near-polar orbit during a period of extremely high geomagnetic activity indicate that Joule heating is the primary source of energy for atmospheric heating associated with geomagnetic activity. This conclusion is supported by the following observational evidence: (1) There is an atmospheric response in the auroral zone which is nearly simulataneous with the onset of geomagnetic activity, with no significant response in the equatorial region until several hours later; (2) The maximum heating occurs at geographic locations near the maximum current of the auroral electrojet; and (3) There is evidence of atmospheric waves originating near the auroral zone at altitudes where Joule heating would be expected to occur. An analysis of atmospheric response time to this heat shows time delays are apparently independent of altitude but are strongly dependent upon geomagnetic latitude.
File Size	1612678
Page Count	38
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19720002711
Archival Resource Key	ark:/13960/t5n920s64
Language	English
Publisher Date	1971-11-01
Access Restriction	Open
Subject Keyword	Geophysics Accelerometers Ohmic Dissipation Geomagnetism Atmospheric Heating Satellite Observation Upper Atmosphere Atmospheric Density Magnetic Storms Resistance Heating Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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